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The investigation of the elementary reactions of reactive intermediate species began about half a centruy ago with the advent of free radical kinetics as an active area of chemical research. In spite of the relatively greater ease of detection of a species carrying an electrical charge, and the fact that organic chemists had for decades postulated mechanisms involving ionic intermediates, the systematic study of the elementary reactions of ions was delayed for more than twenty years after the first beginnings of free radical kinetics. Even at this writing, in 1978, the word "kinetics" is considered by many chemists to be synomomous with "kinetics of neutral species". Yet in spite of the relatively late start and separation from the mainstream of kinetics, the field of ion physics and chemistry is fluorishing, and growing at an ever faster pace. Instrumentalists devise ever more sophisticated apparatuses with capabilities of delving into nearly every aspect of the interactions between ions and molecules. Even satellites orbiting the earth are now being used effectively to determine rate coefficients of ionospheric ion-neutral reactions, some of which can not as yet be measured in the laboratory.
Sommario
Potential Energy Surfaces for Ion-Molecule Reactions Panel Discussion.- Ion-Dipole Collisions: Recent Theoretical Advances.- Ion-Molecule Collisions: Theory and Experiment Panel Discussion.- Ion-Molecule Collision Complexes Panel Discussion.- Molecular Beam Studies of Ion-Molecule Reactions.- Charge Transfers at Thermal Energies: Energy Disposal and Reaction Mechanisms.- Energy Dependences of Ion-Neutral Reactions Studied in Drift Tubes.- Internal Energy Partitioning Panel Discussion.- Factors Influencing Thermal Ion-Molecule Rate Constants.- Mechanistic Aspects of Ion-Molecule Reactions.- Intramolecular Selectivity, Stereochemical and Steric Aspects of Ion-Molecule Reactions.- Thermochemistry of Polyatomic Cations.- Equilibrium Studies of Negative Ion-Molecule Reactions.- Proton Transfer Reactions in the Gas and Solution Phase.- Studies of Ion Clusters: Relationship to Understanding Nucleation and Solvation Phenomena.- Chemical Ionization in Flames.- Ion-Molecule Reactions in Low Temperature Plasmas: Formation of Interstellar Species.- Ion-Molecule Reactions in the Atmosphere.- Ion-Molecule Processes in Lasers.- Decay Processes of the Lowest Excited Electronic States of Polyatomic Radial Cations.- Ion Photodissociation.- New Instrumentation for the Investigation of Ion-Molecule Reactions Panel Discussion.
Riassunto
The investigation of the elementary reactions of reactive intermediate species began about half a centruy ago with the advent of free radical kinetics as an active area of chemical research.
